Texas Instruments LP5810DYBHR

Overview

LP5810DYBHR from Texas Instruments is a 4-channel linear RGBW LED driver with autonomous animation engine, constant-current sinks (0.1–51 mA per channel), ±5% device-to-device and channel-to-channel current accuracy, ultra-low 110 mV headroom at 25.5 mA, and integrated I²C-controlled PWM dimming up to 24 kHz-designed for compact wearable and IoT indicator lighting.

For engineers reviewing the LP5810DYBHR datasheet, LP5810DYBHR pinout, LP5810DYBHR application, or LP5810DYBHR equivalent, this page delivers verified electrical specs, DSBGA-9 package mapping, autonomous animation timing control, open/short LED diagnostics, and real-world implementation guidance for portable electronics and HMI lighting systems.

Technical Context

The LP5810DYBHR implements a linear current-sink architecture with four independent constant-current outputs, each supporting analog dimming via 1-bit global Maximum Current (25.5 mA / 51 mA) and 8-bit per-channel Dot Current (0–255 steps), plus 8-bit PWM dimming with configurable phase alignment (forward/middle/backward) and linear/exponential curves.

Its autonomous animation engine executes preloaded fade-in/fade-out sequences using three Animation Engine Units (AEUs) and two Animation Pause Units (APUs), synchronized across multiple devices via a programmable 6 MHz internal oscillator or external SYNC signal-reducing MCU real-time load while maintaining precise inter-device timing coherence.

Key Specifications

Pinout & Package

LP5810DYBHR is packaged in a 1.43 mm × 1.34 mm, 9-ball DSBGA (YBH) package with bottom-side thermal pad. Pin assignment follows TI's standard YBH top-view layout.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 4-channel RGBW LED driver applications.

Compared with LP5811DYBHR and LP5812DYBHR, the LP5810DYBHR provides the smallest form factor (DSBGA-9), lowest standby current (26 μA), and tightest headroom (110 mV), making it uniquely suited for battery-powered wearables where board space and efficiency are primary constraints.

Availability

LP5810DYBHR is available at Aetrix Electronics and suitable for smart wearables, gaming peripherals, IoT edge devices, and industrial HMI panels requiring stable component supply, long-lifecycle support, and guaranteed traceability.

Supply support for LP5810DYBHR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies, with decades of expertise in precision LED control and low-power system solutions.

The LP5810DYBHR belongs to TI's LP58xx family of autonomous LED drivers-engineered specifically for compact, battery-sensitive applications demanding rich visual feedback with minimal MCU involvement and ultra-low power consumption.

FAQ

What is the maximum LED current supported by the LP5810DYBHR?

The LP5810DYBHR supports two maximum current modes: 25.5 mA (default, MC = 0) and 51 mA (MC = 1), with per-channel adjustment via 8-bit Dot Current (DC) register. Each current sink maintains ±5% device-to-device and channel-to-channel accuracy across the full range, enabling precise color mixing in RGBW configurations without external calibration. This dual-range design ensures flexibility for both low-power indicators and brighter status lights.

Does the LP5810DYBHR support I²C communication at 1 MHz?

Yes, the LP5810DYBHR fully supports Fast-mode Plus I²C at up to 1 MHz, with specified timing parameters including t_{SU_DAT} ≤ 50 ns and C_b ≤ 550 pF. Its I²C interface tolerates 1.8 V, 3.3 V, and 5 V logic levels, eliminating need for level shifters in mixed-voltage systems. The LP5810DYBHR uses a dedicated 7-bit slave address determined by its variant suffix (DYBHR = bits 4–3 = 11), allowing up to four devices on a single bus.

How does the autonomous animation engine in the LP5810DYBHR reduce MCU workload?

The LP5810DYBHR's autonomous animation engine executes pre-programmed lighting sequences-including fade-in/fade-out, breathing, and multi-phase effects-using three Animation Engine Units (AEUs) and two Animation Pause Units (APUs) per channel. Once started via start_cmd, it runs independently with no host intervention, freeing the MCU from real-time PWM updates. The LP5810DYBHR retains full register state during operation and reports PWM values and pattern status for synchronization.

What is the headroom voltage specification for the LP5810DYBHR at 25.5 mA output?

The LP5810DYBHR achieves a typical headroom (saturation) voltage of 110 mV at 25.5 mA output current and 210 mV at 51 mA, measured across OUTx pins. This ultra-low V_HR enables efficient operation with low-forward-voltage LEDs (e.g., red/green micro-LEDs) and minimizes power loss and thermal rise in dense PCB layouts-critical for thin wearables and compact IoT enclosures where heat dissipation is constrained.

Can the LP5810DYBHR detect open or short circuits in connected LEDs?

Yes, the LP5810DYBHR integrates per-channel LED Open Detection (LOD) and LED Short Detection (LSD). LOD triggers when cathode voltage falls below 90 mV (at 25.5 mA) or 180 mV (at 51 mA) for three consecutive PWM cycles; LSD activates when voltage drops below 35%–68% of VCC depending on configuration. Both faults set dedicated status bits in FAULT_STATUS registers and can be cleared via FAULT_CLEAR, enabling robust field diagnostics without external circuitry.